/**
* Recursive method saving a node in the DB and then recurring over all of its children
*
* @param SimpleXMLElement $xml the element from which the recursion starts (i.e. root node)
* @param int $courseNewID the generated ID of the imported course
*
* @return boolean on debug |AMA_Error on error |int number of imported nodes on success
*
* @access private
*/
private function _importNodi($xml, $courseNewID)
{
static $savedCourseID = 0;
static $count = 0;
static $depth = 0;
/**
* needed to count how many nodes were imported
* in each disctinct course
*/
if ($savedCourseID != $courseNewID) {
$savedCourseID = $courseNewID;
$count = 0;
}
if (self::$_DEBUG) {
echo '<pre>' . __METHOD__ . PHP_EOL;
}
$outArr = array();
$resourcesArr = array(0 => 'unused');
$currentElement = $xml;
$outArr['id'] = (string) $currentElement['id'];
$outArr['id_parent'] = (string) $currentElement['parent_id'];
foreach ($currentElement->children() as $name => $value) {
if ($name === 'posizione') {
$outArr['pos_x0'] = (int) $value['x0'];
$outArr['pos_y0'] = (int) $value['y0'];
$outArr['pos_x1'] = (int) $value['x1'];
$outArr['pos_y1'] = (int) $value['y1'];
} else {
if ($name === 'resource') {
// must do an array push because the method that saves the resources expects
// the array to start at index 1
array_push($resourcesArr, $this->_buildResourceArray($value, $courseNewID . self::$courseSeparator . $outArr['id'], $courseNewID));
// NOTE: the files will be copied later on, together with the others
} else {
if ($name === 'link') {
// this array is saved in the _saveLinks method
$this->_linksArray[] = $this->_buildLinkArray($value, $courseNewID);
} else {
if ($name === 'extended') {
// it's enough to merge the extended array to the outArr and then add_node saves 'em all
$outArr = array_merge($outArr, $this->_buildExtendedArray($value, $courseNewID));
} else {
if ($name === 'nodo') {
continue;
} else {
$outArr[$name] = (string) $value;
}
}
}
}
}
}
if ($outArr['id'] != '') {
$this->_logMessage(__METHOD__ . ' Saving course node. course id=' . $courseNewID . ' so far ' . $count . ' nodes have been imported');
// add the node to the counted elements
$count++;
$this->_progressIncrement();
// make some adjustments to invoke the datahandler's add_node method
if (!is_null($outArr['id_parent']) && strtolower($outArr['id_parent']) != 'null' && $outArr['id_parent'] != '') {
$oldNodeID = $this->_courseOldID . self::$courseSeparator . $outArr['id_parent'];
if (isset($this->_courseNodeIDMapping[$oldNodeID])) {
$outArr['parent_id'] = $this->_courseNodeIDMapping[$oldNodeID];
} else {
$outArr['parent_id'] = $courseNewID . self::$courseSeparator . $outArr['id_parent'];
}
}
// else
// {
// $outArr['parent_id'] = null;
// }
unset($outArr['id_parent']);
$outArr['id_course'] = $courseNewID;
$outArr['creation_date'] = 'now';
$outArr['id_node_author'] = $this->_assignedAuthorID;
$outArr['version'] = 0;
$outArr['contacts'] = 0;
$outArr['icon'] = str_replace('<root_dir/>', ROOT_DIR, $outArr['icon']);
$outArr['icon'] = str_replace('<id_autore/>', $this->_assignedAuthorID, $outArr['icon']);
$outArr['icon'] = str_replace('<http_path/>', parse_url(HTTP_ROOT_DIR, PHP_URL_PATH), $outArr['icon']);
$outArr['text'] = str_replace('<id_autore/>', $this->_assignedAuthorID, $outArr['text']);
$outArr['text'] = str_replace('<http_root/>', HTTP_ROOT_DIR, $outArr['text']);
$outArr['text'] = str_replace('<http_path/>', parse_url(HTTP_ROOT_DIR, PHP_URL_PATH), $outArr['text']);
// oldID is needed below, for creating the array that maps the old node id
// to the new node id. This must be done AFTER node is saved.
$oldID = $outArr['id'];
unset($outArr['id']);
// when a generated id will be used and comment below
// set array of resources to be saved together with the node
// for some unbelievable reason the _add_media method called by add_node
// expects the resources array to start at index 1, so let's make it happy.
unset($resourcesArr[0]);
$outArr['resources_ar'] = $resourcesArr;
// sets the parent if an exported root node is made child in import
if (is_null($this->_selectedNodeID) && $count == 1) {
$outArr['parent_id'] = null;
} else {
if ((!isset($outArr['parent_id']) || $count == 1) && !is_null($this->_selectedNodeID)) {
$outArr['parent_id'] = $this->_selectedNodeID;
}
}
// prints out some basic info if in debug mode
if (self::$_DEBUG) {
echo "count=" . $count . PHP_EOL;
if ($count == 1) {
// if ($outArr['id']==$courseNewID.self::$courseSeparator.'1') {
print_r($outArr);
echo "<hr/>";
} else {
var_dump($outArr['id']);
var_dump($outArr['parent_id']);
var_dump($outArr['name']);
}
}
/**
* ACTUALLY SAVE THE NODE!! YAHOOOO!!!
*/
if (!self::$_DEBUG) {
// $outArr['id'] = $courseNewID.self::$courseSeparator.$outArr['id'];
$this->_logMessage('Saving course node, passing:');
$this->_logMessage(print_r($outArr, true));
$addResult = $this->_dh->add_node($outArr);
// if it's an error return it right away, as usual
if (AMA_DB::isError($addResult)) {
$this->_logMessage(__METHOD__ . ' Error saving course node. DB returned the following:');
$this->_logMessage(print_r($addResult, true));
return $addResult;
} else {
// add node to the course node mapping array,
// keys are exported node ids, values are imported ones
$this->_courseNodeIDMapping[$this->_courseOldID . self::$courseSeparator . $oldID] = $addResult;
$this->_logMessage(__METHOD__ . ' Successfully saved course node');
}
}
}
// recur the children
if ($currentElement->nodo) {
for ($i = 0; $i < count($currentElement->nodo); $i++) {
$this->_logMessage(__METHOD__ . ' RECURRING COURSE NODES: depth=' . ++$depth . ' This node has ' . count($currentElement->test) . ' kids and is the brother n.' . $i);
$this->_importNodi($currentElement->nodo[$i], $courseNewID);
}
}
if (self::$_DEBUG) {
echo "</pre>";
}
$depth--;
return $count;
}
